Answer in brief
CVE-2026-63857 records a Critical severity (CVSS 9.8) vulnerability in net: airoha: Do not read uninitialized fragment address in airoha_dev_xmit(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 9.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=23020f04932701d5c8363e60756f12b43b8ed752 <f670fa4b19ceddc6d215dda4997888ccba9bbc61 || >=23020f04932701d5c8363e60756f12b43b8ed752 <d78c8ab7bd84952e053d0c622b7fc1b4ad8a19a3 || >=23020f04932701d5c8363e60756f12b43b8ed752 <bde34e84edc8b5571fbde7e941e175a4293ee1eb | f670fa4b19ceddc6d215dda4997888ccba9bbc61, d78c8ab7bd84952e053d0c622b7fc1b4ad8a19a3, bde34e84edc8b5571fbde7e941e175a4293ee1eb |
| Linux/Linuxgeneric | 6.11 | Not reported |
| Linux/Linuxgeneric | >=23020f04932701d5c8363e60756f12b43b8ed752 <dba5f4959653e4c212beb746594952e8645d1115 || >=23020f04932701d5c8363e60756f12b43b8ed752 <f670fa4b19ceddc6d215dda4997888ccba9bbc61 || >=23020f04932701d5c8363e60756f12b43b8ed752 <d78c8ab7bd84952e053d0c622b7fc1b4ad8a19a3 || >=23020f04932701d5c8363e60756f12b43b8ed752 <bde34e84edc8b5571fbde7e941e175a4293ee1eb | dba5f4959653e4c212beb746594952e8645d1115, f670fa4b19ceddc6d215dda4997888ccba9bbc61, d78c8ab7bd84952e053d0c622b7fc1b4ad8a19a3, bde34e84edc8b5571fbde7e941e175a4293ee1eb |
Published upstream
Jul 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 21, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
In the Linux kernel, the following vulnerability has been resolved: net: airoha: Do not read uninitialized fragment address in airoha_dev_xmit() The transmit loop in airoha_dev_xmit() reads fragment address and length during its final iteration, when the loop index equals skb_shinfo(skb)->nr_frags, at which point the fragment data is uninitialized. While these values are never consumed, the read itself is unsafe and may trigger a page fault. Fix this by avoiding the fragment read on the last iteration. Additionally, move the skb pointer from the first to the last used packet descriptor, so that airoha_qdma_tx_napi_poll() defers freeing the skb until the final descriptor is processed.
Quoted source text, attributed separately from HOL analysis.